1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.scm.util;
20
21 import java.text.DateFormat;
22 import java.text.ParseException;
23 import java.text.SimpleDateFormat;
24 import java.util.Date;
25 import java.util.Locale;
26
27 import org.codehaus.plexus.util.cli.StreamConsumer;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
30
31 /**
32 * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
33 *
34 */
35 public abstract class AbstractConsumer implements StreamConsumer {
36 protected final Logger logger = LoggerFactory.getLogger(getClass());
37
38 /**
39 * Converts the date timestamp from the output into a date object.
40 *
41 * @param date TODO
42 * @param userPattern TODO
43 * @param defaultPattern TODO
44 * @return A date representing the timestamp of the log entry.
45 */
46 protected Date parseDate(String date, String userPattern, String defaultPattern) {
47 return parseDate(date, userPattern, defaultPattern, null);
48 }
49
50 /**
51 * Converts the date timestamp from the output into a date object.
52 *
53 * @param date TODO
54 * @param userPattern TODO
55 * @param defaultPattern TODO
56 * @param locale TODO
57 * @return A date representing the timestamp of the log entry.
58 */
59 protected Date parseDate(String date, String userPattern, String defaultPattern, Locale locale) {
60 DateFormat format;
61
62 String patternUsed = null;
63 Locale localeUsed = null;
64
65 if (userPattern != null && !userPattern.isEmpty()) {
66 if (locale != null) {
67 format = new SimpleDateFormat(userPattern, locale);
68 localeUsed = locale;
69 } else {
70 format = new SimpleDateFormat(userPattern);
71 localeUsed = Locale.getDefault();
72 }
73 patternUsed = userPattern;
74 } else {
75 if (defaultPattern != null && !defaultPattern.isEmpty()) {
76 if (locale != null) {
77 format = new SimpleDateFormat(defaultPattern, locale);
78 localeUsed = locale;
79 } else {
80 format = new SimpleDateFormat(defaultPattern);
81 localeUsed = Locale.getDefault();
82 }
83 patternUsed = defaultPattern;
84 } else {
85 // Use the English short date pattern if no pattern is specified
86 format = DateFormat.getDateInstance(DateFormat.SHORT, Locale.ENGLISH);
87 patternUsed = "DateFormat.SHORT";
88 localeUsed = Locale.ENGLISH;
89 }
90 }
91
92 try {
93 return format.parse(date);
94 } catch (ParseException e) {
95 if (logger.isWarnEnabled()) {
96 logger.warn(
97 "skip ParseException: " + e.getMessage() + " during parsing date '" + date
98 + "' with pattern '" + patternUsed + "' and locale '"
99 + localeUsed + "'",
100 e);
101 }
102
103 return null;
104 }
105 }
106 }